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Lu, or Luren (卢人), is an extinct Sino-Tibetan language of Guizhou, China. The Luren language may have been extinct since the 1960s.
Luren is closely related to Caijia and Longjia. However, the classification of these languages within Sino-Tibetan is uncertain. Zhengzhang (2010) suggests that Caijia and Bai form a Greater Bai branch, while Sagart argues that Caijia and Waxiang represent an early split from Old Chinese.
In Dafang County, Guizhou, the Lu people are located in Huangni 黄泥乡, Dashui 大水乡, Gamu 嘎木乡, and Shachang 纱厂镇 townships (Dafang County Gazetteer 1996:157).